Tsukemono literally translates into "pickled things" and is a popular, healthy side dish. It usually consists of several types of pickled vegetables such as cucumbers, carrots, daikon radishes, eggplants, and napa cabbage.
Each region and each family have their own tsukemono recipe, depending on local vegetables and flavors. 
It can be served with meals or used as a condiment to add flavor and texture. It can also be enjoyed on its own as a healthy snack.